Service Functions, Troubleshooting
Frequent Problem Sources
72
You are hearing a pulsating Tone (Special Dial Tone) after
logging into a Group
햲
Eventually a group Call Forwarding has been configured for the
group.
You are hearing a Clicking/Breaking after Picking up the
Receiver
햲
If this is an analog telephone, the “call charge transmission
immediately“ has been activated with the configuration program
COMset. You will hear these charge unit pulses for the previous
call after picking up the receiver (particularly, if it was an expen-
sive long distance call).
햳
Check the curled cord of the receiver for defects.
The most important requirement for telephoning is the presence of a
dial tone after picking up the receiver. If this is not the case, the pre-
vious chapter will help you.
If an external call is not possible with your telephone, please check,
if this problem is also existing on other internal telephones or if dial-
ling a different external number is possible.
No external Call possible
햲
Please check the exchange line authorization for these subscrib-
ers.
햳
Please check, if there is a call allowance configured for these
subscribers and if the account is empty.
햴
If you have this problem with all internal telephones, check if the
connection of the PBX to the network operator (e.g. NT) has been
disconnected. If not, please contact your authorized dealer or
your skilled electrician.
Telephony is not possible on the ISDN or System telephone
햲
If you hear the busy tone after picking up the receiver, eventually
both voice channels of the internal S
0
ports are busy. Try again
later.
햳
You might not have entered the corresponding internal telephone
number as first MSN into the telephone. Try to correct this prob-
lem. Make sure that this MSN is presented to the PBX later (see
manual of the telephone).
햴
Disconnect the telephone from the PBX for 5 seconds and an
eventually existing external power supply (Pull the plug). If the
problem is gone, the telephone had a malfunction.
Check if your telephone is really not reachable. Try to make a call
from another internal telephone to you telephone.
No internal and external Calls
햲
Eventually a subscriber Call Forwarding has been configured for
the telephone. You can switch this function off, if unwanted (see
햳
If the telephone is permanently busy, perhaps the Do-not-Disturb
was activated. Switch it off if this is not needed (see
햴
Please check if the ringer of the telephone is deactivated.
햵
Disconnect the corresponding telephone from the PBX and the
external power supply (Pull the plug) for app. 5 seconds. If the
problem is solved, the telephone had a malfunction.
No incoming external Calls, but Calls from internal Telephones
are possible
햲
Eventually a MSN/DDI Call Forwarding has been configured. You
can switch this function off, if unwanted (see
).
햳
Please check if the telephone has the necessary exchange line
authorization for external calls (in this case no external calls can
be started on this telephone).
햴
If you have this problem with all internal telephones, check if the
connection of the PBX to the network operator (e.g. NT) has been
disconnected. If not, please contact your authorized dealer or
your skilled electrician.
No incoming Calls to the Group Number
햲
To receive calls to the group number, you have to log in as a
group member “incoming“ (see
햳
To be able to log into a group, your telephone has to be config-
ured as member of the group.
햴
Eventually a group Call Forwarding has been configured for the
group.
No external Calls are reaching an internal Target Telephone with
a Call Forwarding activated
햲
Please check if the telephone has the necessary exchange line
authorization for external calls (in this case no external calls can
be started on this telephone).
If you are already in a call status with another subscriber (internal or
external), you have to press the Flash key (signal key, R key) on a
DTMF telephone first, before you dial a number e.g. to transfer. In this
manual the flash key is presented with the symbol
F
.
The flash key does not exist on a pulse dial telephone and is also not
necessary. If you have connected an PD telephone to your PBX, you
will not have to press the flash key.
Pressing the FLASH key disconnects the Caller
햲
The FLASH duration of the telephone is too long. Modify the set-
tings of the telephone (see manual of the telephone) or the set-
tings of the PBX with the function “learn FLASH time“ (see
Pressing the FLASH key leaves you in the first Call
햲
The FLASH duration of the telephone is too short. Modify the set-
tings of the telephone (see manual of the telephone) or the set-
tings of the PBX with the function “learn FLASH time“ (see
Telephoning impossible
The Telephone cannot be called
Query or Transfer not possible
